Effect of adding rubber powder to poplar particles on composite properties

► We examined the effect of adding rubber powder on mechanical and water-resistant properties of particleboards. ► Although some mechanical properties were reduced by adding rubber powder, the water resistance was increased considerably. ► Given the manufacturing conditions (rubber content, temperature, resin content and panel density), the panel properties can be estimated by mill personnel. ► Using the nonlinear programing model, the optimal mechanical properties can be obtained under certain practical constraints.